Internal-combustion engine.



w. RABSiLBER.

ENTERNAL COMBUSTIONENGINE.

APPLICATION FILED FEB. 15. 19:7.

3 SH EETSSHEET l,v

ITNESS' I A TTORNE Y .22 7 %H* v W. RABSILBER.

INTERNAL COMBUSTION ENGINE.

APPLICA ION FILED FEB-[5,1917- Patented Apr. 16, 1918 3 SHEETSSHEET 2.

A TTOR/VEY W. RABSIL'BER. I NTERNAL cpMBusnpN ENGlNEr APPLICATION.FILED-FEB.1E1.19I7.

Patented Apr. 16, 1918.

3 SHEETS-SHEET 3.

INVENTOR A TTOR/VEY f Wang/W31? 1' gi W/TA/EfJ: WW

As shown in Fig. 1, the liquid fuel container 21 is connected by a conduit 22 with the exhaust manifold'23. The latter has two chambers, a lower chamber 24- for the exhaust of the hot products of combustion, and an upper chamber 25 int which the fuel supply conduit, opens at 26 (Fig. l). The upper chamber 25 is so constructed that a large surface of its walls is exposed to the heat of the hot products of combustionso that, as the liquid fuel fiows'through the upper chamber 25, it is quickly converted into a hot gas. Between the chamber 25 and the chamber 29, the latter containing the valve 16 above mentioned, commu ication is established through the two b s it and 28 clearly seen at the left in 2, throttle 27 being interposed between these two bores. As the plunger 12 in the cylinder of the fuel injection pump 155 performs its outward stroke, the throttle 2? being in a position to permit free com- '='ication between the heated fuel chamand the chamber 29 of the inlet or sue. on valve- 16, the gaseous fuel will lift the valve 16 from its seat and quickly flow through the bore 37 into the pump cylinder 15, the bore 37 connecting the latter with the chamber 29 as shown. Upon the inward. stroke of the plunger 12, the gaseous fuel is then compressed and forced" through the 30 and. the bores 31, 32 intothe comstion chamber of the engine. The

.stion chamber is produced by a recess in the cylinder head (Figs. 2 and plunger 12 performs its inward thereby putting the gasified fuel uncssure the outlet valve 17 which northe 30, will momentarily m its seat against the pressure 1g spring 47, to permit the gasirush past it into the combustion tioned. Therefore, as the stem 39 is turned in either direction, both throttles, 38 and 2?, are simultaneously operated to either admit or shut off air for the working cylinder and gasified fuel for thegas pump.

The arrangement of the air pumps on the side of theengine where the inlet manifold is located, and of the valves cotiperating therewith is identical with the arrangement of the fuel injection pumps, as clearly seen in the drawing (Fig. 5) and therefore, will not need any further description, as the construction and operation will be entirely clear from the above description of the fuel injection pumps and their parts, except that the throttle valve shown on the left-hand side of Fig. 2 is omitted, the air being admitted directly through an open port.

The engine may be started by a supply of carbureted air.to the inlet manifold 37 so that for a brief period the engine will run as an ordinary gasolene engine. By the hot products of combustion the liquid fuel is quickly gasified in theheating chamber 25, and through a corresponding turn of the stem 39 the throttle valves 38 and 27 are opened so that corresponding amounts of air and gasified fuel respectively are admitted, the former to the engine and the latter to the gas pumps 15 which, upon the inward stroke of their plungers 12 force the gasilied fuel into the combustion chambers of the various engine cylinders, where instantaneous and smokeless combustion occurs at the moment, the heated fuel comes into contact with the compressed air.

I claim as my invention:

1. An internal combustion engine comprising a. working cylinder having a. combustion chamber and provided with inlet and outlet ports, a piston in said working cylinder, means for converting liquid fuel into a gas by the heat generated in said combustion chamber, a pump for forcing the gasified fuel separate from the air into said. combustion chamber at the completion of the compression stroke of the said piston, and a throttle valve for controlling the amount of gasified fuel to be forced by said pump into the combustion chamber.

2.-An .internal combustion engine comprising a working cylinder having a combustion chamber and provided with inlet and outlet ports, a piston in said working cylinder, a heating chamber for converting liquid fuel into a gas by the hot products of combustion, a pump for forcing the gasified fuel separate from theair into the combustion chamber at the completion of the compression stroke of the said piston, and means for controlling the amount of gasified fuel to be forced by said pump into the combustion chamber.

3. An internal combustion engine comprising a working cylinder having a combustion chamber and provided with inlet and outlet ports, a piston in said working cylinder. a heating chamber heated by the hot products of combustion for converting the liquid fuel into a gas, a pump for forcing the gasified fuel separate from the air into the combustion chamber at the completion of the compression stroke of the said piston, and a hand-controlled throttle valve betwen said heating chamber and said bastion chamber at the completion of the pump.

4. An internal combustion engine prising a Wfllkil'lg cylinder having a comb'usiion chamber and provided with inlet and outlet ports, a piston in said werking cylindev, heating chamber formed in the exhaust manifold for converting the liquid fuei into gas, a pump for forcin the gasifled juel separate fmm the an? 11150 the comcompression stroke of the said piston, am? a hand-contrplled threfifle valve between said heating chamber and: said pump In'testimony whereof I my signature in the presence 0f two Witnesses.

'WELELIAM RABSILBER.

fv'itnusses 4 ALFRED MfiLLER, IRMA LAB-KER 

